CVE-2022-23504
TYPO3 CMS vulnerable to Sensitive Information Disclosure via YAML Placeholder Expressions in Site Configuration
Description
TYPO3 is an open source PHP based web content management system. Versions prior to 9.5.38, 10.4.33, 11.5.20, and 12.1.1 are subject to Sensitive Information Disclosure. Due to the lack of handling user-submitted YAML placeholder expressions in the site configuration backend module, attackers could expose sensitive internal information, such as system configuration or HTTP request messages of other website visitors. A valid backend user account having administrator privileges is needed to exploit this vulnerability. This issue has been patched in versions 9.5.38 ELTS, 10.4.33, 11.5.20, 12.1.1.
How to fix CVE-2022-23504
To remediate CVE-2022-23504, upgrade the affected package to a fixed version below.
- —upgrade to 9.5.38 or later
- —upgrade to 10.4.33 or later
- —upgrade to 9.5.38 or later
Is CVE-2022-23504 being exploited?
Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- >= 9.0.0, < 9.5.38, >= 10.0.0, < 10.4.33, >= 11.0.0, < 11.5.20, >= 12.0.0, < 12.1.1
- >= 10.0.0, < 10.4.33
- >= 9.0.0, < 9.5.38
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.7 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:L |